Machine for molding hollow ware from pulp



(No Model.) 3 Sheets-Sheet 1.

M. L. DEERING. MACHINE FOR MOLDING HOLLOW WARE PROM PULP.

No. 541,966. Patented July 2, 1895.

25 /za a 2? H 3 F 27 i 14 1 '1 11 I I 7 \XV 1 l l 6 14 :ELBEEE: a 4 X g- I w 1 4 (No Model.) 3 Sheets -Sheet 2. M. L. DEBRING. MACHINE FOR MOLDING HOLLOW WARE PROM PULP. No. 541,966.

Patented July 2, 1895.

3 Sheets'--Shet 3.

(N0 Modem M. L. DEERING. MACHINE FOR MOLDING HOLLOW WARE PROM PULP. No. 541,966.

Patented July 2, 1895.

19i h mooeo (aha/la p/ zayq/v Va Wm UNTTE STATES PATENT QFl lCEQ MARK L. DEERING, OF BROOKLYN, NEW YORK.

MACHINE FOR MOLDING HOLLOW WARE FROM PULP.

SPECIFICATION forming part of Letters Patent No. 541,966, dated July 2, 1895.

Application filed February 29, 1892. Renewed November 5, 1894- Serial No. 527,920. (No model.)

To all whom it may concern.-

Be it known that I, MARK L. DEERING, of Brooklyn, in the county of Kings and State of New York, formerly of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Machines for Molding Hollow Ware from Pulp, of which I declare the following to be a full, clear, and exact description, reference being bad to the accompanying drawings, forming part of this specification. I

This invention relates to improvements in machines in which pails and other similar vessels may be molded from pulp, with the body and bottom of each vessel united in a single mass, and the invention consists of a machine having its various parts constructed and combined substantially as is herein described and claimed.

In the accompanying sheets of drawings, Figure 1 is a vertical section of the dome and mold in the planes '0 2}, Fig. 5, the mold being expanded, and a front elevation of the lower portion of the machine; Fig. 2, a plan showing the former, the plate on which it rests, and-portions of the platform below the plate; Fig. 3, a vertical section of the dome and the parts of the mold inclosing the former in the planes 0c 00, Fig. 6, the mold being contracted, and a front elevation of the lower portion of the machine; Fig. 4, a plan of the plate at the ends of the sections adjacent to the base of the former; Fig. 5, a horizontal section of the dome and plan of the mold sections and former in the planes y y, Fig. 1, the mold being expanded; and Fig. 6 a horizontal section of the dome and plan of the mold sections and former in the planes 2 a, Fig. 3, the mold being contracted.

Similar reference numbers designate like parts in the several views.

In a patent heretofore obtained by me, namely: No. 455,097, dated June 30, 1891, is shown and described a machine to which this invention is closely related, and on which in respect to certain particulars it is an improvement, yet many important features of the earlier machine are embodied in the improved it does not require any special description. On the upper end of the vertical hydraulic pistonis the platform 1, adapted to be raised and lowered by the piston which projects from the base 2 of the machine, and this platform travels from the base up into the hollow casting 3, which is supportedon the columns 4, 4 secured in the base, in the manner shown. The guide rods 5, 5, fixed in the base, are received in grooves in wings 6, 6 of the platform. A plate 7 is pivoted at 8 on the top of the platform, being provided with a handle 9, and on this plate is fastened the hollow former 10.

corresponding in shape to the interior of the vessel to be molded, and having grooves in its surface connected byholes with the space inside the former, and covered with perforated sheet metal or wire gauze, and also having an outlet for waste water, the same in these respects as formers are ordinarily made. At the base of the former is a flange 10 and on this is a removable ring 11 that fits snugly around the former.

In the bottom of the casting or dome 3 is an annular plate 1 having grooves in its outer edge through which pass the guide rods 5, 5. The inner edge of this plate conforms to the edges of the flange 10 and ring 11, so that a close joint is made with these by the plate, and the upper surface of the ring and that of the plate lie flush with each other, when the platform is elevated and the plate 7 is in contact with the plate 1 as shown in Fig. 1. A channel 12 is formed in the plate 1 with an opening 13 leading into it from below, and with several ports 1% opening from it on the upper face of the plate. This plate is also provided near its outer edge with an open channel 14 from which extends a pipe 1&

In the top of the dome 3 is inserted a flanged plate 15, which is bolted to that casting, and has on its under side the hub 16, on which the annular plate 17 is arranged to slide, having in its edge a channel filled with packing 18. On the lower end of the hub 16 is the steel plate 19 having the rabbet 20 and the cutting edge 21, and within the hub is a pipe 16 which reaches down almost to the plate 19 and projects up through the plate 15. Be-

tween the plates 1 and 17 is placed the series of sections 22, to each of which is pivoted a link 23, the link being also pivoted to a block 24 fastened against the side and top of the dome. These links extend inward and downward from the blocks to the sections, as represented in Fig.1. The sections 22, and the series of alternating sections 25, are arranged to slide on radial guides 26 and 27 in or on the plates 17 and 1 and each of the sections 25 overlaps thefaces of the adjacent sections, and is provided with a stiff spring 28 which bears against the backs of those sections. The sections and the plate 19 are grooved and perforated, and faced with wire gauze or other similar covering, the same as the former. The plates 17 and 1 are connected by bolts 29. A tube 17 is secured in the plate 17, and adapted to slide in the top plate 15, a hole being made through the plate 17 at the bottom of this tube. The blocks 24 are so arranged that thin strips of metal can be inserted between them and the sides or top of the dome, for the purpose of enabling the action of the sections to be made uniform should these require adjustment.

Assuming now that a pail has just been taken out of the machine, it will be understood that the platform 1 is down close to the base, as indicated by dotted lines in Fig. 1, with the former 10 out in front of the platform, resting on the plate 7, which has been swung forward as indicated in Fig. 2, so as to allow the pail to be lifted off of the former, this being done by raising the ring 11 far enough to loosen the pail, and afterward removing the pail with the hands. The operator then proceeds to mold another pail as follows: he forces the ring 11 down upon its seat or into contact with the flange 10 swings the former back to its proper position on the platform, by means of the handle 9 on the plate 7, and causes the platform to be raised until the former has passed up through the plate 1 so that the plate 7 rests against the under face of that plate, which then surrounds the flange 10 and ring 11, as shown in Fig. 1. Now he admits the pulp into the mold from the supply pipe by turninga cock in this pipe. The pulp enters the opening 13, flows around the channel 12, and issues from the ports 14, and when he sees it flow over the top of the pipe 17 he knows that the mold is full, and cuts off the pulp by closing the cock. He then applies the power again tothe piston, whereby the platform and former are raised still higher, but with them are also raised the plates 1 and 17, and the sections 22 and 25, the first of these plates sliding up the guides 5, 5 and the second up the hub 16 of the head, and at the same time the sections are driven inward by the links 23, the sections 25 being carried forward by the sections 22. In this way the pulp is compressed on the former, the water being squeezed out through the holes in its sides and top, and in the head-plate 19 and in the sections, and the body and bottom of the pail are rendered uniform in thickness and density since the sections move inward toward the former the same distance as the former moves upward toward the head, during the process of form-- the sections meet the plate 1 when these are retracted from the former, as shown in Fig. 1. The water squeezed out of the mold into the former and head is carried off by pipes, that in the head being pumped up through the tube 16 and the water which passes through the sections is collected in the channel 14 in the plate 1 and carried off by the-pipe 14 The platform is next lowered, when the weight of the sections and the plates 17 and 1 causes these parts also to descend, and the sections are drawn back from the former by thelinks 23, the sections 25 being moved in this direction by means of the springs 28. When the plate 17 strikes the plate 19, the two plates 17 and 1 and the sections, are pre' vented from descending farther, but the platform, with the former having the newly molded pail upon it, continues to descend, the pail passing through the opening in the plate 1?. After lowering the platform until it has reached the base the operator swings forward the plate 7 and is then able to remove the pail in the manner above explained.

It will be seen that improvement-is made on the previous invention above mentioned, by the introduction of the plate 1 separate from the platform, with the changes of construction enabling this to be done, which plate being bolted against the lower ends of the sections and provided with guides, binds the sections together at the bottom the same as the plate or collar 17 does at the top, by the reduction in the number and changein the arrangement of the links whereby the sections are driven forward and retracted, and by the pro vision of means for determining when the mold becomes full.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for molding pails and similar vessels from pulp, the combination of the head, the vertically movable former, the system of movable sections arranged to surround the former, the sliding plate or collar mounted on the head and secured against the ends of the sections adjacent to the head, a plate secured against the opposite ends of the sections, means whereby the sections are forced inward and retracted, and suitable lifting mechanism, substantially as described.

2. In a machine for molding vessels from pulp, the combination of the head, the vertically movable platform, the former stationed thereon, the system of movable sections ar- ICS ' plate secured against the opposite ends of the ranged to surround the former, the sliding plate or collar on the head secured against the ends of the sections adjacent to the head, a

sections, and provided with an opening where in the former may be inserted, and means whereby the sections are forced inward and retracted, substantially as described.

I 3. In amachine for molding vessels from pulp, the combination of the head, the vertically movable platform, the former stationed thereon, the removable ring 11 fitted on the base of the former, the system of movable sections, the collar on the head secured against the ends of the sections adjacent to the head, a plate secured against the opposite ends of the sections, and provided with an opening wherein the former maybe inserted, with the upper surface of the ring 11 flush with the upper surface of the plate, and means whereby the sections are forced inward and re- .tracted, substantially as described.

4. In a machine for molding vessels from pulp, the combination of the head, the vertically movable platform, the former stationed thereon, the system of sections arranged to surround the former, the sliding plate or collar on the head in contact with the ends of the sections adjacent to the head, a plate in contact with the opposite ends of the sections, and provided with an opening wherein the former may be inserted, bolts extending from one plate to the other, and means whereby the sections are forced inward and retracted,substantially as described.

5. In a machine for molding vessels from pulp, the combination of the head, the vertically movable former, the system of movable sections arranged to surround the former, the collar mounted on the head and secured against the ends of the sections adjacent to the head, a plate secured against the opposite ends of the sections, guides whereon the sections slide, in or on these plates, means whereby the sections are forced inward and retracted, and suitable lifting mechanism, substantially as described.

6. In a machine for molding vessels from pulp, the combination of the frame or dome, the head secured therein, the vertically movable former, the series of sections 22 and the series of alternating sections 25, arranged to surround the former, the sliding plate or collar mounted on the head and secured against the ends of the sections adjacent to the head, a plate secured against the opposite ends of the sections, the series of links extending from the sections 22 to hearing blocks fixed against the walls of the dome, and suitable lifting mechanism connected with the former, sub stantially as described.

7. In a machine for molding vessels from pulp, the combination of the frame or dome, the head secured therein, the vertically movable former, the series of sections 22 and the series of alternating sections 25, arranged to surround the former, the vertically movable plates in contact with the ends of the sections, the series of adjustable bearing blocks fixed against the walls of the dome, the series of links extending from these to the sections 22, and suitable lifting mechanism connected with the former, substantially as described.

-8. Ina machine for molding vessels from a pulp, thecombination with a contracting and expanding system of sections forming the outer lateral wall of the mold, a head, and a plate in contact with the ends of the sections adjacent to the head, of the plate in contact with the oppositeends of the sections and having an opening of greater diameter than that of the vessel to be molded, the vertically movable platform, the former mounted thereon and adapted to pass through the opening in the last mentioned plate, a flange at the base of the former adapted to enter and to close this opening, and operating mechanism, substantially as described.

9. In a machine for molding vessels from pulp, the combination with a contracting and expanding system of sections forming the outer lateral wall of the mold, ahead, and a plate in contact with the ends of the sections adjacent to the head, of a plate in contact with the opposite ends of the sections and having an opening of greaterdiam'eter than that of the vessel to be molded, the vertically movable platform, a plate pivoted thereon and adapted to be swuugoutward, the former fixed on the pivoted plate and adapted to pass through the aforesaid opening, a flange at the base of the former adapted to enter and to close this opening, and operating mechanism, substantially'as described.

10. In a machine for molding vessels from pulp, the combination of a contracting and expanding system of sections forming the outer lateral wall of the mold and adapted to be raised and lowered, means whereby the sections are forced inward when they are lifted, a bottom plate in contact with the lower ends of the sections and having an opening of greater diameterthan that of the vessel to be molded, the vertically movable platform adapted to support the bottom plate, the former mounted on the platform and adapted to pass through the opening in the bottom plate,aflange atthe base of the former adapted to enter and to close this opening, a top'for the mold, and operating mechanism, substantially as described.

11. In a machine for molding vessels from pulp, the combination of a platform, a former stationedthereon, a plate surrounding the former above the platform, having a port or ports 14 therein for the introduction of pulp to the mold, a system of movable sections adapted to rest on this plate surrounding the former and to contract about it and recede from it, a top for the mold and mechanism whereby the sections are actuated, the ports 14 being sovlocated as to be closed by the sections as they slide inward, substantially as described.

IIO

12. In a machine for molding vessels from pulp, the combination of the head, the vertically movable platform, the former stationed thereon, the system of movable sections arranged to surround the former and to be lifted with it, means whereby the sections are forced inward and retracted, the collar on the head in contact with the ends of the sections adjacent to the head, a series of bolts secured to the collar, and extending downward therefrom behind the sections, the bolts being stationary in the collar, and means in connection with the bolts whereby the sections are supported, substantially as described.

13. In a machine for molding vessels from pulp, the contracting and expanding mold Seneca having at its top an opening from which pulp may issue when the mold is full, with means for afterward closing the opening, substantially as described.

14. In a machine for molding vessels from pulp, the contracting and expanding mold having at its top an opening from which the pulp may issue when the mold is full, and which is arranged to be closed by the contracting walls of the mold, substantially as described.

MARK L. DEE RING.

In presence of- CHAS. COLEMAN MILLER, J AMES J. WILSON. 

